Ages ago I bought a computer workstation. Perfect for the room and the alcove it fits in. Still in use. The runners for the keyboard shelf were missing, so went back to sort it out on a Saturday morning. Every man and his dog were returning stuff - queue estimated at about 3 hours.
So I went into the warehouse, opened the appropriate box up, and walked out with the missing parts. Hoping to get stopped so I could tell them what I thought of them.